Liquid mixing and cooling device



Dec. 23, 1930. w. c. SANFORD, JR I 1,786,129

LIQUID MIXING AND COOLING DEVICE Filed Jan. '28, 1930 Patented Dec. 23, 1930 .UNITED STATES WILLIAM C. SANFORD, JR., GERRO DE PASCO, PERU LIQUID MIXING .AND COOLING DEVICE Application filed January 28, 1930. Serial No. 423,989.

The invention relates to a novel device for mixing and cooling liquids, particularly beverages, the device comprising a cup-like receptacle forthe liquid, a telescopingcover 6 for sealing the same to permit the liquid to be shaken and a self-containing refrigerating system associated with and carriedv by the cover, including an upper sealed reservoir preferably disposed on top of the cover, a

10 lower sealed reservoir suspended from the cover by means of a pipe, the upper open end of which projects into the upper sealed reservoir and the lower open end of which terminates in the lower sealed reservoir projecting sufiiciently far below the bottom of the cover to be immersed within the liquid when the cover is applied, and a heating unit, preferably of the electric type, adapted to be applied to the upper reservoir, which unit will be effective, when current is applied thereto, to vaporize the refrigerant contained in the circulatory system comprising the upper and lower sealed reservoirs with the connecting 1 e. p lhe invention is illustrated in the accompanying drawings, in which Fig. 1 is a sectional elevation of the device. Fig. 2 is a sectional elevation of the heatin unit. v

*ig. 3 is a horizontal section on line 3-3 of Fig. 2.

Referring to the drawings, 1 indicates the vessel or receptacle to receive the liquid to be mixed and cooled and may conveniently take the form of a metallic one, which is adapted to be sealed by a dome-shaped cover 2, the lower peripheral edge of which telescopes within the upper rim of the member 1 and forms a liquid-tight seal, thereby permitting 40 the contents of the vessel to be shaken or agitated without wastage. The upper portion of the cover 2 is finished with a dome-like extension 3, provided with abottom 4, which converts the dome-shaped member 3 into a $5 hermetically sealed upper reservoir, the bottom 4 being secured to the inner face of the cover by any suitable mode of jointure between metallic parts. The center of the bottom 4 of the upper reservoir 3 is pierced by an opening and traversed by a pipe 5, which is rigidly secured'to the bottom by means of a flange 6, the upper open end of the pipe 5" extending to a point ustvbelow the top of the dome 3 and the lower end of the pipe eX- tending well below the bottom rim of the cover and having secured thereto a closed chamber or reservoir 7, the upper closed reservoir constituting the dome 3, the lower closed reservoir 7 and the connecting pipe 5 forming a circulatory system for a suitable refrigerant, such as sulphur dioxide, preferably associated with an absorbent, such as water-glass, aqua ammonia, or any other type of highly volatile fluid commonly employed in refrigerating apparatus.

Associated with the upper reservoir 3, in relation to permit ready engagement and dis engagement therewith, is a heating. unit, which, in the form shown, involves a generally cylindrical cap-like element 8 of insulat- 70 ing material, the interior of which is provided with a'series of projecting studs 9 in upper and lower peripheral series, from which is looped a suitable resistance wire or ribbon 12, commonly employed in electrical heating units, which is included in circuit with two metallic posts 11, 11 disposed at the top of the cap 8 and constituting the terminals for electrical supply wires carried by the cable 15,

which latter passes through a central openo ing ina cover piece 10 attached to the top of the cap 8, which normally protects the terminal posts 11. I r I In the operation of the apparatus, as described, the electrical heating unit is applied by telescoping the cap'8'over the exterior of the dome-shaped reservoir 3, in the man her and form in Fig. 1, but with the cover 2 disengaged from the receptacle 1 and the reservoir 7 immersed in cold water, and the current is turned on, with the result that the heat generated in the'various'loops of the resistance, 12 vaporizes the refrigerant in the upper reservoir 3, causing the vapors to pass down through-the pipe 5 into-the lower reservoir 7, which latter being immersed in coldwater causes the vapors to be cooled and condensed in a liquid form in the reservoir 7. After sulficient refrigerant has been thus vaporizedin the upperfreservoir 1 and condensed in the lower reservoir, the action of the heating unit is discontinued and the latter removed from telescoping engagement with the upper reservoir and said upper reservoir is cooled preferably by applying cold water thereto. This reduces the vapor pressure in the upper reservoir to such an extent that the condensed refrigerant in the lower reservoir begins to evaporate and continues until the pressure is equal in the two reservoirs. Then if the liquid to be mixed and cooled is poured into the receptacle 1 and the cover applied thereto, the evaporation in the lower reservoir will effect a cooling of the contents of the receptacle lat the same time said contents are being agitated to effect an admixture of the ingredients thereof.

It will be noted that, in order to get the refrigerant in the upper reservoir initially, it is necessary only to invert the cover, so that the liquid refrigerant flows by gravity from the lower reservoir 7 into the upper reservoir 3. However, when the cover is in its normal upright position, the extension of the pipe 5 into the upper reservoir above the level of the refrigerant therein will prevent the refrigerant passing from the upper reservoir until said refrigerant has been vaporized, thereby facilitating the evaporation of ammonia from a solution of aqua.

ammonia in the upper reservoir and the condensing of said ammonia in the lower reservoir.

That I claim is 1. A liquid mixing and cooling device, comprising a cup-shaped vessel, a telescoping cover therefor including a sealed reservoir, a tube supported by said cover having an open end extending into said sealed reservoir and a lower end extending below the cover and terminating in a lower sealed reservoir, a heating device adjacent said upper reser voir, and a refrigerant adapted to circulate between the reservoirs.

2. A liquid mixing and cooling device, comprising a cup-shaped vessel, a telescoping cover therefor including a sealed reservoir, a tube supported by said cover having an open end extending into said sealed reservoir and a lower end extending below the cover and terminating in a lower sealed reservoir, an electrical heating device adjacent said upper reservoir, and a refrigerant adapted to circulate between the reservoirs.

3. A liquid mixing and cooling device, comprising a cup-shaped vessel, a telescoping cover therefor including a sealed reservoir, a tube supported by said cover having an open end extending into said sealed reservoir and a lower end extending below the cover and terminating in a lower sealed reservoir, a removable electrical heating device adjacent said upper reservoir, and a refrigerant adapted to circulate between the reservoirs.

4. A liquid mixing and cooling device, comprising a cup-shaped vessel, a telescoping cover therefor, a sealed dome in the upper part of said cover, a tube supported by said cover having an open end extending into said dome and its lower end extending below the cover and terminating in a sealed r servoir, a heating device adjacent said dome, and a refrigerant adapted to circulate between the dome and reservoir.

5. A liquid mixing and cooling device, comprising a cup-shaped vessel, a telescoping cover therefor, a sealed dome in the upper part of said cover, a tube supported by said cover having an open end extending into said dome and its lower end extending below the cover and terminating in a sealed reservoir, an electrical heating device telescopically engaging said dome, and a refrigerant adapted to circulate between the dome and reservoir.

6. A liquid mixing and cooling device, comprising a vessel to receive the liquid, a telescoping cover therefor, an upper sealed reservoir carried by the cov r, a tube having an open end extending into said reservoir, a lower sealed reservoir connected to the bot tom of said tube, a refrigerant contai? ed in the closed circuit including the reservoirs and the connecting tube, and a removable electrical heating device adapted to be applied to the upper reservoir.

7. A liquid mixing and cooling device, comprising a vessel to receive the liquid, a telescoping cover therefor, an upper sealed reservoir carried by the cover, a tube having an open end extending into said reservoir, a lower sealed reservoir connected to the bottom of said tube, a refrigerant contained in the closed circuit including the reservoirs and the connecting tube, and an electrical.

heating device adapted to be telescopically applied to the upper reservoir.

In testimony whereof, I afiix my signature.

WILLIAM G. sanronn, JR. 

